Chair



FIG. 1 is a front and right perspective view of a first embodiment of the chair, showing my design;

FIG. 2 is a rear and left perspective view thereof;

FIG. 3 is a front and right perspective view of a second embodiment of the chairs, showing my design; and

FIG. 4 is a rear and left perspective view thereof. 

The ornamental design for a chair, substantially as shown and described. 